<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <ul>
        <li>
                <h3>江苏省</h3>
                <ul>
                <li>南京</li>
                <li>苏州</li>
                <li>无锡</li>
                    
            </ul>
        </li>
        <li>
                <h3>湖北省</h3>
                <ul>
                    <li>武汉</li>
                    <li>黄石</li>
                    
                </ul>
        </li>
    </ul>



</body>

</html>